10 files changed, 58 insertions, 0 deletions
diff --git a/modules/gdnative/nativescript/nativescript.cpp b/modules/gdnative/nativescript/nativescript.cpp
index 96a17c99b8..ed3ec44bf7 100644
--- a/modules/gdnative/nativescript/nativescript.cpp
+++ b/modules/gdnative/nativescript/nativescript.cpp
@@ -111,6 +111,13 @@ void NativeScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder)
 
 #endif
 
+bool NativeScript::inherits_script(const Ref<Script> &p_script) const {
+#ifndef _MSC_VER
+#warning inheritance needs to be implemented in NativeScript
+#endif
+	return false;
+}
+
 void NativeScript::set_class_name(String p_class_name) {
 	class_name = p_class_name;
 }
diff --git a/modules/gdnative/nativescript/nativescript.h b/modules/gdnative/nativescript/nativescript.h
index 249b8fa42a..7e7598e06c 100644
--- a/modules/gdnative/nativescript/nativescript.h
+++ b/modules/gdnative/nativescript/nativescript.h
@@ -133,6 +133,8 @@ protected:
 public:
 	inline NativeScriptDesc *get_script_desc() const;
 
+	bool inherits_script(const Ref<Script> &p_script) const;
+
 	void set_class_name(String p_class_name);
 	String get_class_name() const;
 
diff --git a/modules/gdnative/pluginscript/pluginscript_script.cpp b/modules/gdnative/pluginscript/pluginscript_script.cpp
index a4c84dc0ca..6b303c8716 100644
--- a/modules/gdnative/pluginscript/pluginscript_script.cpp
+++ b/modules/gdnative/pluginscript/pluginscript_script.cpp
@@ -140,6 +140,13 @@ bool PluginScript::can_instance() const {
 	return can;
 }
 
+bool PluginScript::inherits_script(const Ref<Script> &p_script) const {
+#ifndef _MSC_VER
+#warning inheritance needs to be implemented in PluginScript
+#endif
+	return false;
+}
+
 Ref<Script> PluginScript::get_base_script() const {
 	if (_ref_base_parent.is_valid()) {
 		return Ref<PluginScript>(_ref_base_parent);
diff --git a/modules/gdnative/pluginscript/pluginscript_script.h b/modules/gdnative/pluginscript/pluginscript_script.h
index 5c93ae38f5..70b9ca980b 100644
--- a/modules/gdnative/pluginscript/pluginscript_script.h
+++ b/modules/gdnative/pluginscript/pluginscript_script.h
@@ -72,6 +72,8 @@ private:
 protected:
 	static void _bind_methods();
 
+	bool inherits_script(const Ref<Script> &p_script) const;
+
 	PluginScriptInstance *_create_instance(const Variant **p_args, int p_argcount, Object *p_owner, Callable::CallError &r_error);
 	Variant _new(const Variant **p_args, int p_argcount, Callable::CallError &r_error);
 
diff --git a/modules/gdscript/gdscript.cpp b/modules/gdscript/gdscript.cpp
index 00bf464f63..98366f7957 100644
--- a/modules/gdscript/gdscript.cpp
+++ b/modules/gdscript/gdscript.cpp
@@ -895,6 +895,24 @@ Ref<GDScript> GDScript::get_base() const {
 	return base;
 }
 
+bool GDScript::inherits_script(const Ref<Script> &p_script) const {
+	Ref<GDScript> gd = p_script;
+	if (gd.is_null()) {
+		return false;
+	}
+
+	const GDScript *s = this;
+
+	while (s) {
+		if (s == p_script.ptr()) {
+			return true;
+		}
+		s = s->_base;
+	}
+
+	return false;
+}
+
 bool GDScript::has_script_signal(const StringName &p_signal) const {
 	if (_signals.has(p_signal))
 		return true;
diff --git a/modules/gdscript/gdscript.h b/modules/gdscript/gdscript.h
index 9758818162..5fdc25669f 100644
--- a/modules/gdscript/gdscript.h
+++ b/modules/gdscript/gdscript.h
@@ -151,6 +151,8 @@ protected:
 public:
 	virtual bool is_valid() const { return valid; }
 
+	bool inherits_script(const Ref<Script> &p_script) const;
+
 	const Map<StringName, Ref<GDScript>> &get_subclasses() const { return subclasses; }
 	const Map<StringName, Variant> &get_constants() const { return constants; }
 	const Set<StringName> &get_members() const { return members; }
diff --git a/modules/mono/csharp_script.cpp b/modules/mono/csharp_script.cpp
index 1f9576b756..f5911275c9 100644
--- a/modules/mono/csharp_script.cpp
+++ b/modules/mono/csharp_script.cpp
@@ -3536,6 +3536,18 @@ void CSharpScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
 	}
 }
 
+bool CSharpScript::inherits_script(const Ref<Script> &p_script) const {
+	Ref<CSharpScript> cs = p_script;
+	if (cs.is_null()) {
+		return false;
+	}
+
+#ifndef _MSC_VER
+#warning TODO: Implement CSharpScript::inherits_script and other relevant changes after GH-38063.
+#endif
+	return false;
+}
+
 Ref<Script> CSharpScript::get_base_script() const {
 
 	// TODO search in metadata file once we have it, not important any way?
diff --git a/modules/mono/csharp_script.h b/modules/mono/csharp_script.h
index ff7449e38e..05e2857538 100644
--- a/modules/mono/csharp_script.h
+++ b/modules/mono/csharp_script.h
@@ -194,6 +194,8 @@ public:
 	virtual bool is_tool() const { return tool; }
 	virtual bool is_valid() const { return valid; }
 
+	bool inherits_script(const Ref<Script> &p_script) const;
+
 	virtual Ref<Script> get_base_script() const;
 	virtual ScriptLanguage *get_language() const;
 
diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
index 7cc52eef36..fe1d82f977 100644
--- a/modules/visual_script/visual_script.cpp
+++ b/modules/visual_script/visual_script.cpp
@@ -1460,6 +1460,10 @@ VisualScript::VisualScript() {
 	is_tool_script = false;
 }
 
+bool VisualScript::inherits_script(const Ref<Script> &p_script) const {
+	return this == p_script.ptr(); //there is no inheritance in visual scripts, so this is enough
+}
+
 StringName VisualScript::get_default_func() const {
 	return StringName("f_312843592");
 }
diff --git a/modules/visual_script/visual_script.h b/modules/visual_script/visual_script.h
index 29309aa156..c154e56703 100644
--- a/modules/visual_script/visual_script.h
+++ b/modules/visual_script/visual_script.h
@@ -272,6 +272,8 @@ protected:
 	static void _bind_methods();
 
 public:
+	bool inherits_script(const Ref<Script> &p_script) const;
+
 	// TODO: Remove it in future when breaking changes are acceptable
 	StringName get_default_func() const;
 	void add_function(const StringName &p_name);